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PubMedDate not supplied

Biological reduction of chlorate in a gas-lift reactor using hydrogen as an energy source.

Chlorate release into the environment occurs with its manufacture and use. Biological reduction of chlorate offers an attractive option to decrease this release. A hydrogen gas-lift reactor with microorganisms attached to pumice particles was used for the treatment of wastewater containing high concentrations of chlorate. The microorganisms used chlorate as an electron acceptor and hydrogen gas as a reducing agent. After a start-up period of only a few weeks, chlorate reduction rates of 3.2 mmol L(-1) h(-1) were achieved during continuous operation. During this period, a hydrogen consumption rate of 14.5 mmol L(-1) h(-1) was observed. Complete removal of chlorate was maintained at hydraulic retention times of 6 h. This study clearly demonstrates the potential of hydrogen gas-lift bioreactors for the treatment of chlorate-containing waste streams.

Bioreactors↗
PubMed2000

Sinus lift procedure of the maxilla in patients with inadequate bone for dental implants: radiographic appearance.

OBJECTIVE: Dental implants have gained popularity for treating edentulism, but some patients develop jaw atrophy, which leaves insufficient bone for implants. To treat these patients, the sinus lift procedure, which augments bone, was developed. Altered anatomy from this procedure has an unusual radiographic appearance, confusing those unfamiliar with it. We describe the sinus lift procedure and its radiographic appearance. CONCLUSION: With knowledge of this surgery and some of its pitfalls, radiographs can be more easily and accurately interpreted.

Aged↗
PubMed1977

A weight illusion produced by lifting movements.

The perceived relative heaviness of objects was manipulated by instructing 13 subjects to lift them gently or vigorously, as was predicted by the motor theory of weight judgment and the known behavior of proprioceptors. The time-order error was shown to be significantly related to lifting movements.

Humans↗
PubMedDate not supplied

Chronic sinusitis complicating sinus lift surgery.

Sinusitis has been reported as a complication of sinus lift surgery with antral bone augmentation. The procedure involves the creation of a submucoperiosteal pocket in the floor of the maxillary sinus for placement of a graft consisting of autogenous, allogenic, or alloplastic material. This can result in inadvertent tearing of the mucoperiosteal flap with extrusion of graft material into the antrum. Obstruction of the sinus outflow tract by mucosal edema and particulate graft material may result in sinusitis. We will discuss the clinical presentation and management of 14 cases of chronic sinusitis following sinus lift surgery with alloplastic hydroxyapatite (HA) augmentation of the maxillary antrum.

Adult↗
PubMed1998

Reliability and validity of rigid lift and pelvic leveling device method in assessing functional leg length inequality.

Clinicians commonly include an assessment of leg length inequality (LLI) as a component of a musculoskeletal examination. Little research is available, however, documenting reliability and validity of clinical methods for assessing LLI. The purpose of this study was to determine the reliability and validity of assessing functional LLI using a pelvic leveling device. Subjects were 19 women and 13 men between the ages of 18 and 55 who reported having a diagnosed or suspected LLI. Clinical determination of LLI was made by placing rigid lifts under the suspected shorter lower extremity until the leveling device indicated that the iliac crests were level. This measurement was made twice by one investigator and once by a second investigator. Standing radiographic measurements of LLI using rigid lifts were used to establish validity of the clinical method. Intraclass correlation coefficients [ICC(2,1)] and absolute difference values were computed to assess reliability and validity. The mean absolute difference between the two clinical measurements of LLI by the same investigator was 0.29 cm (+/- 0.52), with an ICC = 0.84. The mean absolute difference between clinical measurements of LLI by the two investigators was 0.49 cm (+/- 0.46), with an ICC = 0.77. The ICC and mean absolute difference reflecting agreement between radiographic measurements and clinical measurements of LLI was 0.64 and 0.58 cm (+/- 0.58), respectively, for one investigator and 0.76 and 0.55 cm (+/- 0.37), respectively, for the second investigator. The intratester reliability, intertester reliability, and validity assessments included instances in which paired observations disagreed regarding which lower extremity was the shorter lower extremity. Factors that may be associated with the unacceptable reliability and validity of the clinical assessment method include asymmetric positioning of the ilia, body composition of the patient, and design of the clinical instrument. The authors discuss clinical implications related to assessment of LLI.

Adolescent↗
PubMed1997

Heel lifting as a conservative therapy for osteoarthritis of the hip: based on the rationale of Pauwels' intertrochanteric osteotomy.

Patients with osteoarthritis of the hip were treated with a conservative therapy of heel lifting. Orthoses were applied on 35 hips in 33 subjects and the cases were followed for 23 months on average. Dramatic pain relief was reported, but the time required to reduce or completely relieve pain increased according to the stage of osteoarthritis. The radiological results were not satisfactory. During the follow-up, only two hips showed improvement, 22 showed no change, and 11 deteriorated. The mechanism of heel lifting in relation to the hip joint was analysed, showing that pelvic obliquity was achieved and the trunk stabilized. In conclusion this simple orthosis was effective as a palliative therapy for osteoarthritis of the hip.

Biomechanical Phenomena↗
PubMed1999

[Mediastinoscopic resection combined with a sternum lift technique in a case of thymic cyst].

We report on a case of thymic cyst which was successfully treated with mediastinoscopic resection combined with a sternum lift technique. A 62-year-old man was admitted to our hospital with a thymic cyst, which was causing chest discomfort and was increasing in size. The tumor was located above the pulmonary artery in the anterior mediastinum. He underwent mediastinoscopic resection while lifting the inferior portion of the sternum with a Laparolift. The cyst was resected sharply and bluntly with the Harmonic Scalpel without rupture. The patient was discharged on the 6th postoperative day in a good condition. Mediastinoscopic resection of a thymic cyst through a xiphoid approach is a useful surgical approach because of the absence of postoperative pain and because it allows early discharge from the hospital.

Endoscopy↗
PubMed2000

Comparison of colony lift with direct spotting methods of blot preparation on the effect of colony hybridization in the detection of environmental organisms.

Nucleic acid probes are used on site to detect or to identify individual microbial cells without cultivation. This molecular technique can avoid some limitations of traditional identification methods including time consuming and imprecise. This study examined the factors affecting colony hybridization and compared the effectiveness of membrane prepared by colony lifting with direct spotting procedures using the universal probe Eub 338. The results of hybridization varied depending on the type of colony morphology. For dry and rough colonies, colony hybridization was not suitable for detecting Acinetobactersp. (CK2A, CK2B), Alcaligenes sp. (TH11 B), Xanthomonas sp. (TH7B), Arthrobacter globiformis (CCRC 10598) and Microbacterium sp. (CCRC 11036). Colonies of Acinetobacter sp. (CCRC 15425) and Alcaligenes spp. (CCRC 10828, H) on agar and membrane were thick and raised, and their detection signals of hybridization were diffused or blank. Colonies of Alcaligenes sp. (CM7A, ANV2) and Acinetobacter sp. (ANV8) isolated from the sludge of biological processes treating ABS wastewater were flat and smooth, and their hybridization signals were clear. For those strains suitable for colony hybridization, the colony blots prepared by colony lift and direct spotting procedures gave the same sensitivity for colony hybridization.

Bacteria↗
PubMed2001

Current practices in endoscopic brow and temporal lifting.

This article describes new innovations in the endoscopic treatment of the ptotic brow and temple. Extensive release of upper midface ligamentous structures and wide undermining of the orbicularis oculi are maneuvers that have been added to the standard brow lift procedure. Suspension sutures have improved brow tail and cheek fat elevation. Radiofrequency instrumentation and fibrin glue have allowed the minimization of tissue trauma during depressor muscle lysis and brow and temple fixation. Brow lowering techniques also have been developed to reverse the effects of aggressive endoscopic and coronal brow lifting.

Endoscopy↗
PubMed2002

[Performance of internal-loop air-lift nitrifying bioreactor].

The performance of internal-loop air-lift nitrifying bioreactor was good with strong tolerance to influent ammonia concentration (78.49 mmol/L), high volume converting rate (163.18 mmol/L.d) and obvious working stability (ammonia removal > 94.42%). During operation of internal-loop air-lift bioreactor, the nitrifying activated sludge was granulated. The nitrifying granular activated sludge began to appear on day 45. Its average diameter was 0.83 mm, settling velocity was 55.53 m/h and specific ammonia removal rate was 0.95 mmol (NH4(+)-N)/g (VS).d. The nitrifying granular activated sludge had the activity for anaerobic ammonia oxidation with ammonia oxidation rate of 0.23 mmol (NH4(+)-N)/g(VS).d and nitrite reduction rate of 0.24 mmol (NO2(-)-N)/g(VS).d.

Ammonia↗
PubMed2003

Lifting shoeprints using gelatin lifters and a hydraulic press.

A method for lifting two-dimensional dust footwear marks on rough or porous surfaces, such as cardboard or cloth, using a hydraulic press, was examined. It was found that exerting pressure on the lifter by the press usually improves the quality of the results. When the shoeprints were on rough or soft surfaces, the prints transferred to the gelatin lifters were better than those obtained by the conventional method. In other cases, using the press did not improve the results but was much simpler to apply. Based on the results of this study, the hydraulic press/gelatin lifter method (the "press method") is used at the authors' laboratory, depending on the surface from which the shoeprint is to be lifted. It is the authors' intention to apply the method to other surfaces after finding the optimal pressure for surfaces with loose fibers.

Forensic Medicine↗
PubMed2003

[Maxillary sinus lifting and simultaneously placement of implants from the top of alveoli].

OBJECTIVE: To study the effect of maxillary sinus floor elevation by the Frialit-2 Bone Condenser for implantation. METHODS: 11 patients underwent sinus floor lift by The Frialit-2 Bone Condenser and were inserted 14 implants. The time of following up was 10 - 21 months. RESULTS: There were no implant loose or lost, no clinical complaint of maxillary sinus area, and X-ray exam showed well osseointegration. CONCLUSIONS: The Frialit-2 bone condenser can be used for lifting sinus floor, and the sinus elevation without lateral access allows the insertion of implants with no additional surgical stress for the patients.

Alveolar Process↗
PubMed1992

Aesthetic maxillo-facial surgery: face lifting and S.M.A.S.

The article illustrates the importance of face lifting and S.M.A.S. tightening as an adjunct to the aesthetic aspect of maxillo facial surgery, for instance in combination with extreme mandibular set back or advancement in adults. The theory and basic techniques of the face lifting procedure and the S.M.A.S. tightening technique are described. A clinical example is presented. The indications pre- and postoperative management and complications have been mentioned.

Adult↗
PubMed2002

[Maxillary sinus lifting, bone graft and simultaneous placement of implants: reports of 9 cases].

OBJECTIVE: To study the effect of maxillary sinus floor lifting by bone graft for immediate implantation. METHODS: 10 maxillary sinus underwent sinus floor bone graft and 12 simultaneously implants placement. RESULTS: There were no implants loose or lost; X-ray examination showed well osseointegration and no maxillary sinustitus. Sinus floors were lifted 5-10mm, with a mean value of 7.5mm. All the implants placement had been repaired in 6 to 7 months postoperatively. CONCLUSION: Maxillary sinus floor bone graft with simultaneous placement of implant is predictable.

English Abstract↗
PubMedDate not supplied

Gasless laparoscopy-assisted colon surgery utilizing mini-laparotomy and a subcutaneous abdominal wall lift system.

BACKGROUND/AIMS: This study was performed to investigate the technical aspects and perioperative results of using a subcutaneous abdominal wall lift system for laparoscopy-assisted colectomy. METHODOLOGY: We attempted a laparoscopy-assisted colectomy for 19 patients and completed 16 cases using mini-laparotomy and a subcutaneous abdominal wall lift system, observing monitor images via laparoscopy or direct views through mini-laparotomy. All 5 surgeons had no experience of laparoscopy-assisted colectomy but considerable experience of laparoscopic cholecystectomy. RESULTS: The operating time ranged from 120 to 360 minutes with an average of 188. Intraoperative blood loss ranged from 20 to 300 mL with an average of 116 mL. No postoperative major complications occurred, but 5 cases suffered wound infection. CONCLUSIONS: Laparoscopy-assisted colon surgery utilizing a subcutaneous abdominal wall system and mini-laparotomy was feasible as minimally invasive surgery for colorectal diseases, even for surgeons with little previous experience.

Abdominal Wall↗
PubMed1992

[Lift mask with use of a malleable implant: BOP S.P. Initial results].

The mask lift, the latest technique for facial rejuvenation, comprises a large remodelling of the frontal and orbito-malar area. The modelling resections by bone-grinding are essentially designed to taise the superior orbital rim, but by the onlay grafts on the malar bone as well as the ones on the superior orbital rim many problems occur due to the donor site (autogenous bone), their biocompatibility and eventual resorption or integration. It is therefore proposed to use BOP S.P. as an onlay graft, a synthetic and biocompatible material already used in neurosurgery for cranioplasties with good results. Its essential advantage over other implants is its wax like consistency and its progressive adhesion to the bone, which allows onlay grafts to be placed wherever required; the modelling is fast, the result are immediately controllable and it is stable after a few hours hardening. BOP S.P. is essentially used as onlay graft material for mask lifts, but has also been successfully tested on 4 facial contour reconstructions for corrections after major traumatic injuries. No complication has been observed in a series of 9 cases but a one year follow-up is too short.

Biocompatible Materials↗
PubMed1992

[Deep "en bloc" facial lift].

As described by Hamra, the concept of deep face lift differs from the double face lift with SMAS in that it raises "en bloc" all of the elements which contribute to ageing of the face. As this is largely achieved in a virtually avascular plane, the postoperative course is considerably accelerated and it provides a solution for the nasolabial fold and the malar pouch.

Facial Muscles↗